R600: Add FMA instructions for Evergreen

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213882 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/R600/EvergreenInstructions.td b/lib/Target/R600/EvergreenInstructions.td
index 17edf15ed8f6bc90a533d605aea68e9e4e2a00d6..a83567a6acaa72fef2bc98ca596733b6d6f0b799 100644 (file)
--- a/lib/Target/R600/EvergreenInstructions.td
+++ b/lib/Target/R600/EvergreenInstructions.td
@@ -257,6 +257,12 @@ def VTX_READ_GLOBAL_128_eg : VTX_READ_128_eg <1,
 
 let Predicates = [isEGorCayman] in {
 
+// Should be predicated on FeatureFP64
+// def FMA_64 : R600_3OP <
+//   0xA, "FMA_64",
+//   [(set f64:$dst, (fma f64:$src0, f64:$src1, f64:$src2))]
+// >;
+
 // BFE_UINT - bit_extract, an optimization for mask and shift
 // Src0 = Input
 // Src1 = Offset
@@ -313,6 +319,7 @@ def BIT_ALIGN_INT_eg : R600_3OP <0xC, "BIT_ALIGN_INT", [], VecALU>;
 def : ROTRPattern <BIT_ALIGN_INT_eg>;
 def MULADD_eg : MULADD_Common<0x14>;
 def MULADD_IEEE_eg : MULADD_IEEE_Common<0x18>;
+def FMA_eg : FMA_Common<0x7>;
 def ASHR_eg : ASHR_Common<0x15>;
 def LSHR_eg : LSHR_Common<0x16>;
 def LSHL_eg : LSHL_Common<0x17>;

diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td
index 436b0956f21d0af43901c6233e44c396bb8cb856..671f923a91c16ea7b45e367116ddaee6f9694bb5 100644 (file)
--- a/lib/Target/R600/R600Instructions.td
+++ b/lib/Target/R600/R600Instructions.td
@@ -915,6 +915,11 @@ class MULADD_IEEE_Common <bits<5> inst> : R600_3OP <
   [(set f32:$dst, (fadd (fmul f32:$src0, f32:$src1), f32:$src2))]
 >;
 
+class FMA_Common <bits<5> inst> : R600_3OP <
+  inst, "FMA",
+  [(set f32:$dst, (fma f32:$src0, f32:$src1, f32:$src2))]
+>;
+
 class CNDE_Common <bits<5> inst> : R600_3OP <
   inst, "CNDE",
   [(set f32:$dst, (selectcc f32:$src0, FP_ZERO, f32:$src1, f32:$src2, COND_OEQ))]

diff --git a/test/CodeGen/R600/fma.f64.ll b/test/CodeGen/R600/fma.f64.ll
new file mode 100644 (file)
index 0000000..b4b9450
--- /dev/null
+++ b/test/CodeGen/R600/fma.f64.ll
@@ -0,0 +1,46 @@
+; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+
+declare double @llvm.fma.f64(double, double, double) nounwind readnone
+declare <2 x double> @llvm.fma.v2f64(<2 x double>, <2 x double>, <2 x double>) nounwind readnone
+declare <4 x double> @llvm.fma.v4f64(<4 x double>, <4 x double>, <4 x double>) nounwind readnone
+
+
+; FUNC-LABEL: @fma_f64
+; SI: V_FMA_F64 {{v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\]}}
+define void @fma_f64(double addrspace(1)* %out, double addrspace(1)* %in1,
+                     double addrspace(1)* %in2, double addrspace(1)* %in3) {
+   %r0 = load double addrspace(1)* %in1
+   %r1 = load double addrspace(1)* %in2
+   %r2 = load double addrspace(1)* %in3
+   %r3 = tail call double @llvm.fma.f64(double %r0, double %r1, double %r2)
+   store double %r3, double addrspace(1)* %out
+   ret void
+}
+
+; FUNC-LABEL: @fma_v2f64
+; SI: V_FMA_F64
+; SI: V_FMA_F64
+define void @fma_v2f64(<2 x double> addrspace(1)* %out, <2 x double> addrspace(1)* %in1,
+                       <2 x double> addrspace(1)* %in2, <2 x double> addrspace(1)* %in3) {
+   %r0 = load <2 x double> addrspace(1)* %in1
+   %r1 = load <2 x double> addrspace(1)* %in2
+   %r2 = load <2 x double> addrspace(1)* %in3
+   %r3 = tail call <2 x double> @llvm.fma.v2f64(<2 x double> %r0, <2 x double> %r1, <2 x double> %r2)
+   store <2 x double> %r3, <2 x double> addrspace(1)* %out
+   ret void
+}
+
+; FUNC-LABEL: @fma_v4f64
+; SI: V_FMA_F64
+; SI: V_FMA_F64
+; SI: V_FMA_F64
+; SI: V_FMA_F64
+define void @fma_v4f64(<4 x double> addrspace(1)* %out, <4 x double> addrspace(1)* %in1,
+                       <4 x double> addrspace(1)* %in2, <4 x double> addrspace(1)* %in3) {
+   %r0 = load <4 x double> addrspace(1)* %in1
+   %r1 = load <4 x double> addrspace(1)* %in2
+   %r2 = load <4 x double> addrspace(1)* %in3
+   %r3 = tail call <4 x double> @llvm.fma.v4f64(<4 x double> %r0, <4 x double> %r1, <4 x double> %r2)
+   store <4 x double> %r3, <4 x double> addrspace(1)* %out
+   ret void
+}

diff --git a/test/CodeGen/R600/fma.ll b/test/CodeGen/R600/fma.ll
index d72ffeceb92152e1886fb939c4ad5ded683a0572..eec8eb7f1c514e0a9661db98f3e5f5399bdb971a 100644 (file)
--- a/test/CodeGen/R600/fma.ll
+++ b/test/CodeGen/R600/fma.ll
@@ -1,13 +1,10 @@
 ; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=r600 -mcpu=redwood -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
 
 declare float @llvm.fma.f32(float, float, float) nounwind readnone
 declare <2 x float> @llvm.fma.v2f32(<2 x float>, <2 x float>, <2 x float>) nounwind readnone
 declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>) nounwind readnone
 
-declare double @llvm.fma.f64(double, double, double) nounwind readnone
-declare <2 x double> @llvm.fma.v2f64(<2 x double>, <2 x double>, <2 x double>) nounwind readnone
-declare <4 x double> @llvm.fma.v4f64(<4 x double>, <4 x double>, <4 x double>) nounwind readnone
-
 ; FUNC-LABEL: @fma_f32
 ; SI: V_FMA_F32 {{v[0-9]+, v[0-9]+, v[0-9]+, v[0-9]+}}
 define void @fma_f32(float addrspace(1)* %out, float addrspace(1)* %in1,
@@ -47,43 +44,3 @@ define void @fma_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)*
    store <4 x float> %r3, <4 x float> addrspace(1)* %out
    ret void
 }
-
-; FUNC-LABEL: @fma_f64
-; SI: V_FMA_F64 {{v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\]}}
-define void @fma_f64(double addrspace(1)* %out, double addrspace(1)* %in1,
-                     double addrspace(1)* %in2, double addrspace(1)* %in3) {
-   %r0 = load double addrspace(1)* %in1
-   %r1 = load double addrspace(1)* %in2
-   %r2 = load double addrspace(1)* %in3
-   %r3 = tail call double @llvm.fma.f64(double %r0, double %r1, double %r2)
-   store double %r3, double addrspace(1)* %out
-   ret void
-}
-
-; FUNC-LABEL: @fma_v2f64
-; SI: V_FMA_F64
-; SI: V_FMA_F64
-define void @fma_v2f64(<2 x double> addrspace(1)* %out, <2 x double> addrspace(1)* %in1,
-                       <2 x double> addrspace(1)* %in2, <2 x double> addrspace(1)* %in3) {
-   %r0 = load <2 x double> addrspace(1)* %in1
-   %r1 = load <2 x double> addrspace(1)* %in2
-   %r2 = load <2 x double> addrspace(1)* %in3
-   %r3 = tail call <2 x double> @llvm.fma.v2f64(<2 x double> %r0, <2 x double> %r1, <2 x double> %r2)
-   store <2 x double> %r3, <2 x double> addrspace(1)* %out
-   ret void
-}
-
-; FUNC-LABEL: @fma_v4f64
-; SI: V_FMA_F64
-; SI: V_FMA_F64
-; SI: V_FMA_F64
-; SI: V_FMA_F64
-define void @fma_v4f64(<4 x double> addrspace(1)* %out, <4 x double> addrspace(1)* %in1,
-                       <4 x double> addrspace(1)* %in2, <4 x double> addrspace(1)* %in3) {
-   %r0 = load <4 x double> addrspace(1)* %in1
-   %r1 = load <4 x double> addrspace(1)* %in2
-   %r2 = load <4 x double> addrspace(1)* %in3
-   %r3 = tail call <4 x double> @llvm.fma.v4f64(<4 x double> %r0, <4 x double> %r1, <4 x double> %r2)
-   store <4 x double> %r3, <4 x double> addrspace(1)* %out
-   ret void
-}